This was posted By ECGS on another forum regarding the TrueTrac in our diffs.
Thought you should see this. It may or may not affect your decision.
My CV's seated properly and i have not noticed any of said problems yet, But i will keep everyone updated.
Quote:
"There is some technical difficulties with those true tracs and they have been discontinued............... they can be installed but some pieces should be machined for them to work properly.
1. as evidence of the picture, truetrac did not provide a provision for a needle bearing or a bushing in the case nor did they even slot it for oil flow. Therefore the shaft can ride metal on metal on the driverside. If you do not have manual hubs then this CV spins all the time. We bore the case and install a bushing. In some instances a CV shaft has seized to the truetrac this is rare as the TT side gear typically keeps it centered, but it is a poor design.
2. the side gear does not retain the CV shaft as it should there are two different styles over the years one allows the CV shaft to float to far out and will cause seal to leak the revision does not allow the shaft to seat at all. On the revision you remove side gear and bore like .100 out of the inside to allow C-clip to seat. On previous version you can modify cv shaft with additional groove or cheat the seal out and hope for the best."
And quote:
"Yes I was referring to T7.5R which is what you have. We have put them in with no mods and had no issue so hopefully yours will be fine but we do not recommend them and they have been discontinued until further revision. If it was mine i would put it in and deal with the issues at hand its just hard to explain to a customer that the product you are selling them may have issues."